Finding the Third Proportional to 12,993.75 and 20,351.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.75 : 20,351.25 = 20,351.25 : x
2. Step 2: Convert to fraction form
   12,993.75/20,351.25 = 20,351.25/x
3. Step 3: Cross multiply
   12,993.75x = 20,351.25 × 20,351.25
4. Step 4: Simplify right side
   12,993.75x = 414,173,376.56
5. Step 5: Solve for x
   x = 414,173,376.56/12,993.75
6. Step 6: Final answer
   x = 31,874.81